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Lubricants
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Tribocorrosion of Surface Engineered Materials
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Tribocorrosion of Surface Engineered Materials

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: closed (1 August 2018) | Viewed by 20588

Special Issue Editors

Prof. Dr. Yong Sun

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Guest Editor
School of Engineering and Sustainable Development, De Montfort University, The Gateway, Leicester LE1 9BH, UK
Interests: composite; surface engineering and coating technologies for tribological, corrosion resistance, and biomedical applications; characterisation of surface-engineered systems; tribology, corrosion, and tribocorrosion of surface-engineered materials
Special Issues, Collections and Topics in MDPI journals
Dr. Xiulin Ji

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Guest Editor
Engineering Research Center of Dredging Technology of Ministry of Education, Hohai University, Changzhou, China
Interests: surface engineering, metallic glasses, tribocorrosion, tribology, corrosion, laser processing

Special Issue Information

Dear Colleagues,

Surface engineering involves the design and modification of the surface and substrate of an engineering material together as a system to give cost effective performance. It has been used widely in industry to enhance the tribological performance, corrosion resistance and biomedical properties of materials.

A surface engineered material is a composite system comprising the surface layer, the subsurface zone and the substrate. One of the major concerns in the use of surface engineered materials is the sustainability of the surface layer and the modified surface region with finite thicknesses. Such a concern become more important when tribocorrosion is involved in application, such as in biomedical implants, food processing components, and valving/coupling components in chemical processing industry. The combined mechanical and chemical actions involved in tribocorrosion can lead to the synergistic effect between wear and corrosion. Minor damages to the surface layer may lead to the penetration of the chemical solution to the substrate, creating a galvanic effect between the surface layer and the substrate. This, when coupled with the mechanical wearing actions, can lead to the premature failure of the surface engineering system during tribocorrosion.

Since the 1990s, significant progress has been made in the study of tribocorrosion of bulk materials. Although the tribological and corrosion properties of many surface engineering systems have been studied separately, the study on tribocorrosion of surface engineered materials has been limited so far. Thus, this Special Issue is aimed at stimulating tribocorrosion studies of surface engineered materials. Contributions from both academic research and application-oriented research are welcome.

Dr. Yong Sun
Dr. Xiulin Ji
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Lubricants is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • surface engineering
  • tribocorrosion
  • wear
  • friction
  • corrosion
  • biomedical

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Published Papers (5 papers)

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Research

12 pages, 13278 KiB  
Article
Combating the Tribo-Corrosion of LDX2404 Lean Duplex Stainless Steel by Low Temperature Plasma Nitriding
by Xiaoying Li, Wenbo Dou, Linhai Tian and Hanshan Dong
Lubricants 2018, 6(4), 93; https://doi.org/10.3390/lubricants6040093 - 19 Oct 2018
Cited by 14 | Viewed by 4062
Abstract
A lean duplex stainless steel, LDX2404, was DC plasma nitrided under a range of treatment conditions. The microstructure characterisation evaluation of the treated samples revealed that a dense, super-hard surface layer can be produced by low-temperature (<450 °C) plasma treatments. The original austenite [...] Read more.
A lean duplex stainless steel, LDX2404, was DC plasma nitrided under a range of treatment conditions. The microstructure characterisation evaluation of the treated samples revealed that a dense, super-hard surface layer can be produced by low-temperature (<450 °C) plasma treatments. The original austenite phase became S-phase and the ferrite phase was supersaturated with nitrogen and ε-Fe3N nitride precipitated from it. When plasma nitriding was carried out at above 450 °C, chromium nitrides precipitated in the surface nitrided layer. Compared to the untreated samples, the surface hardness of the lean duplex stainless steel (DSS) is increased up to four times. The dry wear resistance increased when increasing the treatment temperature. In contrast, the low-temperature treated samples showed the best performance in the electrochemical corrosion and corrosion-wear tests; the performance of the high temperature (>450 °C) plasma nitrided samples was found to be significantly worse than that of the untreated material. Full article
(This article belongs to the Special Issue Tribocorrosion of Surface Engineered Materials)
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13 pages, 4325 KiB  
Article
Tribocorrosion Response of Surface-Modified Ti in a 0.9% NaCl Solution
by Richard Bailey
Lubricants 2018, 6(4), 86; https://doi.org/10.3390/lubricants6040086 - 25 Sep 2018
Cited by 7 | Viewed by 3432
Abstract
Titanium use is limited due to its poor tribological properties, and thermal oxidation (TO) and pack carburisation with limited oxygen diffusion (PCOD) are just two of the surface treatments that can be used to enhance the surface properties of Ti. In this study, [...] Read more.
Titanium use is limited due to its poor tribological properties, and thermal oxidation (TO) and pack carburisation with limited oxygen diffusion (PCOD) are just two of the surface treatments that can be used to enhance the surface properties of Ti. In this study, commercially pure titanium was surface modified using thermal oxidation (TO) and pack carburisation with limited oxygen diffusion (PCOD). Samples were tribological tested in a 0.9% NaCl solution under a contact load of 20 N to investigate the mechanical and electrochemical response of the surface treatments. The tests conducted show that a clear benefit can be obtained in terms of the overall material loss rate using both TO and PCOD. The TO and PCOD treatments generate very different surface structures: TO produces a rutile TiO2 surface film and the PCOD treatment produces a TiC network structure. Both treatments improve the load bearing capacity with the assistance of an oxygen diffusion zone (ODZ). When subjected to sliding contact in a 0.9% NaCl solution, the results show the PCOD-Ti produced the best overall results, with a material loss rate 7.5 times lower than untreated Ti and 2.4 times lower than TO-Ti. The improved wear rate of the PCOD-Ti is attributed to the TiC network structure. The TO-Ti suffers from rapid film failure and high friction. The reduced material loss rate (MLR) of the TO-Ti is attributed to the hard wearing ODZ. Full article
(This article belongs to the Special Issue Tribocorrosion of Surface Engineered Materials)
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18 pages, 6846 KiB  
Article
Improved Tribocorrosion Resistance of a CoCrMo Implant Material by Carburising
by Josianne Cassar, Bertram Mallia, Antonino Mazzonello, Andreas Karl and Joseph Buhagiar
Lubricants 2018, 6(3), 76; https://doi.org/10.3390/lubricants6030076 - 28 Aug 2018
Cited by 11 | Viewed by 4555
Abstract
Tribocorrosion damage is a cause for the premature failure of hip implants made of cobalt-based alloys. Low-temperature carburising can be a plausible solution towards mitigating the tribocorrosion damage of articulating components. This diffusion treatment introduces a supersaturated carbon solid solution, termed S-phase, which [...] Read more.
Tribocorrosion damage is a cause for the premature failure of hip implants made of cobalt-based alloys. Low-temperature carburising can be a plausible solution towards mitigating the tribocorrosion damage of articulating components. This diffusion treatment introduces a supersaturated carbon solid solution, termed S-phase, which hardens the CoCrMo alloy without detriment to the corrosion resistance. This work investigates and compares the tribocorrosion behaviour of untreated and carburised ASTM F1537 CoCrMo alloys tested in Ringer’s solution using a reciprocating sliding configuration against a polycrystalline alumina counterface under different electrochemical conditions. The research shows that whereas the carburised alloy suffered a slightly higher wear loss under a cathodic potential, it was able to reduce the material losses considerably when tested under both open circuit and anodic potential conditions. Under anodic conditions material losses by corrosion due to wear dominated. The better tribocorrosion resistance of the carburised layer was attributed to the better qualities of the passive film for the carburised sample coupled with an increased load support. Full article
(This article belongs to the Special Issue Tribocorrosion of Surface Engineered Materials)
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12 pages, 4315 KiB  
Article
A Comparison Study on Wear Behaviors of Mo and Al2O3-Mo Coatings from RT to 300 °C
by Jianhui Yan, Yuanjun Guo, Yi Wang, Peng Zhou and Jingwen Qiu
Lubricants 2018, 6(2), 48; https://doi.org/10.3390/lubricants6020048 - 11 May 2018
Cited by 7 | Viewed by 4168
Abstract
Mo and Al2O3-Mo coatings are fabricated on a low-carbon steel substrate using atmospheric plasma spraying. The microstructure and mechanical properties of two as-sprayed coatings, with a particular focus on the tribological behaviors from room temperature to 300 °C, are [...] Read more.
Mo and Al2O3-Mo coatings are fabricated on a low-carbon steel substrate using atmospheric plasma spraying. The microstructure and mechanical properties of two as-sprayed coatings, with a particular focus on the tribological behaviors from room temperature to 300 °C, are comparatively investigated in this study. Microstructural analysis of the coatings shows that the porosity of the Al2O3-Mo coating is higher than that of Mo coating. The addition of Al2O3 particles reduces the coating–substrate adhesion strength. The Al2O3-Mo coating, in comparison to the Mo coating, shows improved mechanical properties, such as hardness and wear resistance. The friction coefficients of both coatings increase with further increases in test temperatures. The friction coefficient of the Al2O3-Mo coating, tested above 100 °C, is lower than that of the Mo coating. The wear failure mechanisms of the two coatings are delamination, brittle fracture, oxidation and adhesion wear. In addition, local plastic deformation was also found in the Mo coating. Full article
(This article belongs to the Special Issue Tribocorrosion of Surface Engineered Materials)
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9 pages, 4068 KiB  
Article
Tribocorrosion of Fe-Based Amorphous Coating in Simulated Body Fluids
by Chanyuan Luo, Xiulin Ji, Cuicui Ji, Yingtao Zhang and Hui Wang
Lubricants 2018, 6(2), 37; https://doi.org/10.3390/lubricants6020037 - 18 Apr 2018
Cited by 5 | Viewed by 3680
Abstract
An arc-sprayed Fe-based amorphous coating with high hardness and low porosity was prepared. A tribo-electrochemical approach was used to study the tribocorrosion behaviour of the amorphous coating. The volume wear losses of the amorphous coating with different sliding paths in dry, 0.9% NaCl, [...] Read more.
An arc-sprayed Fe-based amorphous coating with high hardness and low porosity was prepared. A tribo-electrochemical approach was used to study the tribocorrosion behaviour of the amorphous coating. The volume wear losses of the amorphous coating with different sliding paths in dry, 0.9% NaCl, and PBS solutions were measured, as well as the friction coefficient and the polarization curves in static and dynamic situations. The volume wear loss with the linear sliding path is higher than those with circular and triangle paths. Since the ions in the solution accelerate the wear, the volume loss of the amorphous coating in 0.9% NaCl solution is higher than dry and in PBS solution. The wear loss of 316L stainless steel (SS) is about 1.7 times more than the amorphous coating in PBS solution under a load of 10 N. Although 316L SS possesses better corrosion resistance than the amorphous coating in the static situation, the corrosion resistance of the amorphous coating is much better than that of 316L SS during tribocorrosion. The wear mechanism of the amorphous coating includes abrasive wear accompanying with corrosive wear. For the intrinsic superior corrosion resistance, amorphous coating shows the prospective tribology application in the corrosion environment. Full article
(This article belongs to the Special Issue Tribocorrosion of Surface Engineered Materials)
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